NAICS 523150: Investment Banking and Securities Intermediation
This industry comprises establishments primarily engaged in underwriting, originating, and/or maintaining markets for issues of securities, or acting as agents (i.e., brokers) between buyers and sellers in buying or selling securities on a commission or transaction fee basis.  Investment bankers act as principals (i.e., investors who buy or sell on their own account) in firm commitment transactions or act as agents in best effort and standby commitments.  This industry also includes establishments acting as principals in buying or selling securities generally on a spread basis, such as securities dealers or stock option dealers.

Illustrative Examples:

Bond dealing (i.e., acting as a principal in dealing securities to investors)
Mutual fund agencies (i.e., brokerages)
Securities brokerages
Securities underwriting
Stock brokerages
Stock options dealing

ExioML sector: Financial intermediation services, except insurance and pension funding services (65)
Region: US | Year: 2022
Sector value added: 513913.698347 M EUR | Employment: 4156.5058422 thousand persons
Sector GHG emissions: 6216615088.58 kg CO2 eq | Energy carrier net total: 178921.216966 TJ | Carbon intensity: 0.0120966129304895

Company: Td Ameritrade Holding Corp
TD Ameritrade Holding Corp (TDAHC), a subsidiary of The Charles Schwab Corporation, is a provider of securities brokerage and technology-based financial services to independent registered investment advisors and retail investors.